Air conditioner



FIG. 1 is the front perspective view of an air conditioner showing our new design;

FIG. 2 is the front view thereof;

FIG. 3 is the rear view thereof;

FIG. 4 is the left-side view thereof;

FIG. 5 is the right-side view thereof;

FIG. 6 is the top plan view thereof; and,

FIG. 7 is the bottom plan view thereof.

The broken lines in the drawings illustrate portions of the air conditioner which form no part of the claimed design. 

CLAIM We claim the ornamental design for an air conditioner, as shown and described. 